---
id: CVE-2026-73514
title: >-
  The address_standardizer extension for PostGIS through 3.7.0, fixed in commit
  423570b, contains an out-of-bounds write vulnerability that allows a database
  user with the ability to supply caller-controlled relation names to
  standardize_a…
summary: >-
  The address_standardizer extension for PostGIS through 3.7.0, fixed in commit
  423570b, contains an out-of-bounds write vulnerability that allows a database
  user with the ability to supply caller-controlled relation names to
  standardize_a…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
published: '2026-08-13'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:02:50.260'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73514'
references:
  - url: >-
      https://github.com/postgis/address_standardizer/commit/423570b0dbf6cd9f6fc36de28a636e7b6e9aa8aa
    label: disclosure@vulncheck.com
  - url: 'https://github.com/postgis/address_standardizer/pull/3'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/postgis/address_standardizer/pull/4'
    label: disclosure@vulncheck.com
  - url: >-
      https://mehmetince.net/part-1-6-systemic-risks-in-the-managed-postgresql-industry-extension-risks-are-real-exploiting-postgis-memory-corruption-bug-at-neondb-supabase-and-many-more/
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/postgis-address-standardizer-out-of-bounds-write-via-standardize-address
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.0082
epssPercentile: 0.55518
ingestedAt: '2026-09-24T20:51:40.199Z'
---

## Overview

The address_standardizer extension for PostGIS through 3.7.0, fixed in commit 423570b, contains an out-of-bounds write vulnerability that allows a database user with the ability to supply caller-controlled relation names to standardize_address() to trigger memory corruption by providing a rules table with a classification Type value exceeding the fixed class range. Attackers can craft a malicious rules table entry with an oversized rule type value that is used without bounds checking as an index into an internal output-link table, resulting in an out-of-bounds write.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.